GN Solids Control Co., Ltd (short as GN), is the first API certificated solid control equipment manufacturer in China.They do R&D, fabrication, sales, after sales service by themselves.and develop very fast field and also win good relationship with ...

botou huayang trading co.,ltd we are a manuficaterer ,we not only produce different type of professional roll forming machine,but also developed intelligent automatic production line machine.(roof/wall panel ,glazed tile ,c z l u w purlin machinfe,and ...